Viticulture Ch 6 Flashcards
What is fallowing?
Leaning a field without a crop to rest the soil
What is Flubereingung?
Parcel cleaning. Transforming old river sites altering the look and economic viability of the site
What is tilth?
Fine friable top soil that can be easily worked
What is a device used to create a self supporting drain?
A drain mole
What is ploughpan?
An impervious layer of compacted soil
What is the basic rule for using trees as windbreaks?
Trees should be in leaf before vines flower and remain in leaf through harvest
What is a downfall to using evergreens as windbreaks?
A windbreak should filter wind rather than stop it
More likely to harbor birds and nests
What are 2 considerations when using all over netting?
Increase heat summation
Blocking of light
Allow snow to fall through it
What are acceptable light reductions in cool and warm/hot climates
Cool 5%
Warm/hot 15%
Name two ways to protect against predators
Perimeter netting (at least 900mm high 300mm deep)
Individual guards (all act as a mini greenhouse)
What bacteria causes crown gall?
Agrobacterium tumefaciens
What causes advection frost?
Very cold frost carrying wind blows over a region
What causes radiation frost?
Occurs on a clear night when long wave radiation from the ground to air is not impeded by cloud cover or high concentrations of water vapor in the air and rapidly cooling the air around the vines
Name 3 techniques to protect against frost
Burners Windmill Tractor mounted air blast fans Helicopters Spraying water on the vines
What 3 vine training techniques protect against frost?
GDC
Sylvoz
Blondin
